Type-writing machine.



C. B. CORCORAN.

TYPE WRITING MACHINE. y APPLICATIQN FILED MAY 27, 1916.

Patented Nov. 2o, 1917.

2 SHEETS-SHEET l.

f7 F|G.5. 49. 7374 WITNESSES.

C. B. CORCORAN.

TYPE WRITING MACHINE.

APPLICATION FILED MAY 27,1916.

Patented Nov. 20, 1917.

2 SHEETS-SHEET 2.

ATTORNEY.

'-- UNITED sTATEs PNTENT OFFICE.

conNELIUs B. coaconaN,` or NEW Yonx, N. Y., 'AssIGNon To-vUNnEnWoon TYPE- WRITEE COMPANY, or NEW Yonx, N. Y., A coPonATIoNroE DELAWARE.

TYPE-WRITING MACHINE.

To all whom it may concern.'

Be it known that I, CORNELIUS B. COR- CoRAN, a citizen of the" United States, residing in borough of Bronx, 1n the county of Bronx, city and State of New York, have invented certain new and useful Improvements in lType-Writing Machines, of which the following is a speclfication. e

. This invention relates to tabulating lmechanism for typewriting machines, and

more particularly to means for preventing a tabulator stop from being accidentally dis- V placed by a counter-stop being projected while directly opposite orin line with the stop.

This invention may be used with keyset tabu`lators'` for typewriting machines 1n which stops on the typewriter` carriage are selectively set to effective position by a key at the keyboard2 and in which the stops are restored to their ineffective position by a suitable restoring device.

The stop-setting device may be of the type disclosed in the atents to Kurowski, No. 1,106,950, dated ugust 11, 1914, and J. C. Doane, No. 1,157,683, dated October 26,1915.

vThe construction ofthe stop bar and the stop-restoring means may be similar `to that disclosed in the latter patent referred to.

In practice it has been found that in keyset tabulators of the type disclosedin the above-mentioned patents, the stops onl the carriage when set in their eiiective `position are liable to accidentally be displaced by the coperative or denominational stops on the machine frame.V This may occur, for example, when the operator wishes to move the carriage past a column position determined by one stop on the carriage to a position determined by another stop. By depressing a denomination stop key, the

carriage is permitted` to run forward until the projected denomination stop is struck by a set column stop on the carriage, and the latter thereby arrested. By releasing and again depressing the key, the denomination stop is temporarily withdrawn, permitting the adjacent carriage stop to pass as the carriage again advances. `If this second depression of the key takes place very quickly, the denomination stop operated thereby may Specification of Letters Patent.

Application tiled Mey 27, 1916. Serial No. 100,249.

strike the passing carriage stop, and Ydisplace the latter `from its operative position.`

object of the lpresent invention is to provlde means for positively preventing such accidental displacement of the stop on the carriage, andto this end there'is provlded a vstop-lockingI or displacementpreventing device on the machine frame, which -posltively prevents the set stops from being moved from their operative position while they are passmg the denomination stops.

In practising the invention, the means for I preventingr accidental displacement of the stops on the carriage may comprise a swingmg locking bail on the machine frame, normally lin position to overlie projections on the operative stops on the carriage, while the latter are passing the denomination stops, so that said stops on the carriage are Patented Nom-20,

at this time locked or positively prevented from being `shifted to inoperative position.

The set stops may be restored to ineffective position by a stopsrestoring slide bar, such .from being set.

In order to withdraw the locking bail to permit thestops to be set by the stop-setting device, the latter may have a pin operable during the initial movement of the stop-setting device to cam the locking bail "to inoperative lposition.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a sectional elevation from front to rear ofl a typewriting machine showing kthe application of my invention.A

Fig. 2 is a fragmentary plan view of the stop bar, showing two slide bars mounted thereon, one of whichjmovesjthe stop displacement-preventing means out. of the path .of the stop before the latter is restored to its ineffective bar. v y

Fig. 3 is a fra entary rear view of the parts shown in i 2 and'shows the pos1 tion of the first sli e bar after 1t has moved the stop displacement-.preventing means out of the path of the stops.

Fig. 4 is a view s1m1lar to F1g. 3, and shows the second or stop-restoring slide-bar moved to restore the stops to then' meiiective position.

Fi 5 is a rear view showing the stop bar and t e denominational stop bracket, with the stopdisplacement-preventing means mounted on said bracket.

Fi '6 is a' fragmentary side elevation showmg a stop on the stop-bar, a denominationalstop, the stop-settlngshde, the stop-l restoring slide and the means for preventmg position, by the`second slide an accidental displacement of the stop on the stop bar. All of the parts are shown in their normal position.

Fig. 7 shows the stop-jdisplacement-preventing means moved out of the path of the stop on the stop-bar b a partial movement .of the stop-settmg sli e.

Fig. 8 shows the stop-settlng sllde. moved to its final position, and the stop set to its effective position thereby.

Fig. 9 shows the position of the parts after the stop-setting slide has been restored to its normal position; also how the stopdisplacement-preventin means is effectlve to prevent the denomlnational stop from displacing the stop on the stop bar.

Fig. 10 shows the posltion of p arts at an intermediate point in the operation of restoring a stop, the stop-displacement-preventing means being moved out of the path of the stop by a slide on the stop-bar before restoring said stop to its ineffective or normal position. i

Fig. 11 shows the position of the parts after the second slide, orV stop-restoring,

means has moved the stop on the stop-bar to its ineffective position, but before the` slides have lbeen returned by their springs to normal position.

` Fig. 12 is a perspective view, showin the stop-bar, some of the stops being omltted, and the denominational stop bracket with the displacement-preventing means mounted thereon.

The machine may be of the regular Underwood construction, in which a machine frame 15 supports a typewriter carriage 16, comprising a platen 17. The carriage is moved from right to left of the machine byv a spring-drum 18 connected to the carriage by a strap 19. To permit step-by-ste movements of the carriage, there is pivote there# on a rack 20, which meshes with a pinion -21 to rotate an escapement wheel 22, the rotation of said wheel being controlled by recip-l normally in an ineffectiverocating escapement dogs 23- during the course of writing.

To perform tabulating. operations of the carria e, there is provided a set of tabulator denomination selecting keys l25. By depressing a key 25,9J lever 26 is moved about a fulcrum 27, to move a plunger or denominational stop 28 upwardly into the path of a x stop 29 on a stop-bar 30, secured to the car v eac key 25) to swm about a pivot 33 and cause a downward pu l on a link 34 connect- `ed to a release lever 35 pivoted at 36, and move the rack 20 out o engagement with the pinion 21. Thus the carnage is set free to be moved by the spring-drum 18 until it is arrested at the proper position by a stop 29 on the carriage engaging with the projected denominatlonal counter-stop 28.

Thestop-bar 30 is provided with a plurality of stops 292 there being one for each letterspace position of the carriage, and

position, as indicated in Fig. 6.

. To set a stop to an effective position on the carriage, the latter is moved to a desired position indicated by a scale 38 and pointer 39. A stop-setting key 40 is now depressed, to move a lever 41 about a fulcrum 42 and against the tension of Aa spring 43, to move a link 44 connected toy an arm 45 and rock a rock shaft 46. A 'second arm 47 on the rock shaft 46 is moved by the latter to cause a downward pull on a slide 48 the upper end of which is provided with a nger or engaging portion 49, which moves in a vertical plane a fraction of a letter space to the left of the set of decimal denomination stops 28 and engages with one of the stops 29fin the path of the ingerl49 to set said stop to an effective position on the carriage,.as indicated in Fi 8.

To hold t e stops in theirefective or inei'ective positions on the stop-bar, there is provided for each stop a spring-pressed ball 50 in a hole 5] in the stop-bar 30, which engages in notches 52 on the stop 29. Each stop 29 is provided .with lingers 53 and 54, projecting from the upper and lower edges of said sto which limit the movement of the stop to effective or ineffective position on the bar.

To restore the stops 29` to their'meective position, there is'provided a slide bar 55 supported on the stop-bar 30 by screws 56. When the bar 55 is movedlengthwise of the stop-bar 30, it is caused to rise by means of the cams 57 and engages with the fingers 53 of those stops which are set in theireffective position on the bar to restore said stops to their ineilective position.

directly over it, there is provided a bail 60,

comprising arms 61 and 62, pivoted on the denominational stop bracket 63 by means of pivot screws 64. The bail 60 is held in itsv normal .position by a spring 65 which holds the bail against a pin 66 on the stop-setting slide 48. When thus held, the horizontal portion of the bail 60` forms a locking barl which is in the path of the fingers 54 on the stops 29. The bail thus forms a locking device by which the stops 29 are locked or positively prevented from being shifted out of operative position while they are ad'- jacent the counter-stops 28.

To withdraw the bail from the path of the stop29, during a stop-setting operation, the pin 66 on the slide 48 engages with a cam 67 on the arm 61 to swing the bail to the position indicated in Fig. 7. It will be seen by an inspection of Figs. 6 and 7 that the stop-setting slide 48`has a movement before the finger 49 is brought into coperation with the stop 29. Thisy movement is utilized in ei'ecting a withdrawal of the bail 60 from the path of the stop 29. After the withdrawal of the bail 60, the slide 48 continues its movement, which is effective to set the stop 29 in its eiective position on the stop-bar, as indicated in Fig. 8. If the stop-setting `slide 48 is now permitted to return to its normal position, the horizontal portion of the bail 60 willv be moved into the path of the stop 29 by the spring 65; thus, the parts will occup the position indicatedin Fig. 9, in which the bail 60 loverlies the linger 54 .on the set stop, thereby preventing thestop from being moved upward accidentally to inoperative position.

To withdraw the bail 60 from the path of the stop during stop-restoring opera-l v tions, there is provided a slide-bar 70,

mounted on the stop-bar 30 by means of the screws 56 which extend through longitudinal slots-in the slide-bar. By an inspection of Figs. 3 4, 5 and 7, it will be noticed that each slot in the slide provides a cam 71 and a dwell 72. Thus, when the slide-bar 70. is moved lengthwise the cams 71 ,raise the bar to the position indicated in Figs. 3 and 10, Wherev it has been effective to move the horizontal vportion of the bail 60l out oi the path, of the fingers 54, by means of an arm 73 yfon the baill 60, which coperates with the slide-bar 70. As

the slide moves to the left andthe guide screws 56 enter the horizontal portions of the slots, so that the slide has been raised v its maximum amount, it engages witha pin 74 on the stop-restoring slide 55 and moves the latter, causingit to be raised by the cams 57, this movement being eii'ective to-restore the stops 29v to their ineifective osition. Thus, it will be seen that the sli e 70 is effective rst to move the bail 60 out of the path of the stops 29, and then move the stop-restoring sllde, by engaging with the pin 74,' to restore the stops 29 to their normalosition, and that while the first slide 1s e ective to move the second, for the purpose of restoring the stops, said rst slide moves on the dwell 72.

The slide bars 55 and 70 (see Fig. 2) are returned to their normal positions by springs 75 "and 76. The sprmg 75 is retained within a cut-out 7'( in the stop-bar 30, one end of said spring bein connected to the stop bar 30, the other enf? being connected to a pin 78 on the-slide bar 55. The spring 76 isconnected at one end to the slide bar 70, the other end is connected to the pin 74 on the slide bar 55..

, Variations may be resorted to within the scope ofthe invention, and portions of the improvements may be used without others. Having thus-.- described my invention, I

claim:

v 1. In a typewriting machine, the combination with a typewriter frame and a carriage, of a stop and a counter-stop for po` sitiomng said carriage, and means carried by the frame for preventing an accidental displacement of said stop by said counterstop.

2. In a typewriting machine, the combination with a carriage, of a stop thereon, a

machine frame, a counter-stop thereon, and means also carried by the machine frame for preventin accidental displacement of said stop by said counter-stop.

3. In a typewriting machine, the combination with a carriage, of a stop thereon, a machine frame, a counter-stop thereon, and means on the machine frame for preventing accidental 4displacement of said stop by a movement of the counter-sto toward op- `erative position while the sai stop is in its path.

4. In a typewriting machine, the combination with a carriage comprising a stop bar, a stop on said `stop bar, a machine frame, a counter-stop on said machine frame, stop-setting meansfor moving said stop from an ineffective position to an effective position on the stop bar, and means for preventing accidental displacement of said stop, relative to said stop bar, by` said Counter-stop, said preventing means moving under control of said stop-settin means .after said stop has been moved to its effective position.

5. In 'a typewritingmachine, the combination with a carriage, of a stop thereon, means for setting said stop to effective position on said carriage, a counter-stop`,means for preventing accidental displacement of normally lying in the path of the stop while the latter is in ineffective position, said stopsetting means being effective to move said preventing means out of the path of sald rst-mentloned stop before it is moved to effective position.

7. In a typewriting machine, the combination with. a carriage, of a stop thereon, means for setting said stop to effective position, a machine rame, a counter-stop on the machine frame, means on the machine frame for preventing displacement of said stop by said counter-stop, after said stop has been moved to effective position, said preventing mea-ns normally lying inthe path of the stop While the latter is in ineifectve osition, and .means on the machine frame or moving said preventing means out of the path of said iirst-mentioned stop before it is moved to an effective position.

8. In a typewriting machine, the combination with a carriage, ofa stop thereon, means for setting said stop to effective position, a counter-stop, means for preventing accidental displacement of said stop by said counter-stop, and means for restoring said stop toineflr'ective position, said displacementpreventing means being movable out of the path of said first-mentioned stop by either the stop-setting means or the stop-restoring mean-s. y

9. In a typewriting machine, the combination with a carriage, of a stop. thereon, means for setting said stop to effective position, a machine frame, a counter-stop on the machine frame, -means for preventing an accidental displacement of said stopeby said counter-stop after said stop has en moved to an effective position, and means on the typewriter carriage for restoring said stop to an ineffective position, said dis lacement-preventing means being movab e out of the path of said stop by either the stopsetting means or the stop-restoring means.

10. In a typewriting machine, the combination with a carriage comprising a stop bar, of a stop on said stop bar, a counterstop, means for moving said stop to an effective position, means for preventin an accidental displacement of said stop om its effective position, by said counter-stop, a slide bar for moving said displacementpreventing means out of the ath of said stop, and a second slide b ar or restoring said stop to inefective position, said second slide-barbeing operated from said firstmentioned slide bar. I

11. In a' typewriting machine, the combination with a carriage comprising a stop bar, of a stop on said stop bar, a counterstop, means for moving said stop to effective position, means for preventing accidental displacement of said stop from its effectivev position, two slide-bars on said stop bar,

means operated b one of said slide-bars fory moving said disp acement-preventing means out of the path of said stop, and means operated by the other slide-bar for restoring said stop to an ineffective position.

12. In a typewriting machine, the combination with a carriage, of a stop thereon shiftable into and out of an operative position, a counter-stop, a device in the path of the shifting movement of said stop When the stop is Within the 'range of movement of said counter-stop, to prevent displacement of the stop by the counter-stop, means for shiftingv said stop to operative position, and means controlled by said stop-shifting means to move said device out of the path of the stop p efore the latter is shifted to operative posllon.

13.. In a typewriting machine, the combination With a carriage, of a stop thereon shiftable into and out of effective position, a counter-stop, a pivoted bail in the path of Shifting movementvof said stop When said stop is Within the range of said counterstop, means for shifting said stop to an effective position, and means operated by said stop-shifting means to move said bail out of the path of said stop before it is shifted to effective position.

14. In a typewriting machine, the combination with a carriage, of a stop thereon shiftable into and out of effective position, a counter-stop, a machine frame, a pivoted bail on said machine frame in the ath of shifting movement of said stop w en the latter 1s Within the rangeof said counterstop, means for shifting said stop to an effective osition, and a projection on said stop-shi ing means engaging with said pivoted bail to move the latter out of the path of said stop before the latter is shifted to effective position.

15. In a typewriting machine, the combination with a carriage, of a stop thereon, a machine frame, a set of denominational stops on the machine frame, means for moving said stop to eli'ectiveposition, and means operative only in the zone of `said denominational stopsengaging with the carriage stop to prevent accidental displacement thereof by any one of said denominational stops.

16. In a typewritting machine, the com- .bination" with a carriagelof alstopv thereon,l

a machine frame, a set of denominational y,stops on themachineframe,'mean's for moving said carriage stop l to effective position, and'means for preventing accidental displacement of said carriage lstop by any one of said denominational stops, said displacement-preventlng means comprlsmg a bar onV during its entire travel within the'range of the denominational stops.

17. In a typewriting machine, the com-l binationwith a carriage, of a stop thereon, means for moving said stop to effective position, a counter-stop, means for preventing.

accidental displacement of said stop by said counter-stop, said dis lacement-preventing means being normally 1n the path of movement of said stop to and from its eective position, and means controlled by said stopmoving meansl for moving said displacement-preventing means out of said path before the stop is moved to an effective position, said stop-moving means also controlling the return of said displacement-preventing means into said path after the stop has been moved to effective position.

18. In a typewriting machine, the combii nation with a carriage, of a stop thereon,

means for moving said stop to effective position, a set of denominational stops, means embracing-the zone of said stops for preventing accidental displacement of said firstmentioned stop by anyone of said denominational stops, said displacement-preventing means being in the path of movement of said stop to and from effective position only when the stop is Within the range of said denominational stops, means acting Within the zone of said denominational'stops for moving said displacement-preventing means out of said path before the stop is moved to effective position, means for restoring said stop to an ineffective position, and means for moving said dis lacement-preventing means out 'of the pat restored to an ineective position.

19. In a typewriting machine, the combination with a carriage comprising a stop` bar, of a stop on said stop bar, means for moving said stopl to an effective position, a

v counter-stop,l means for preventingv accidental displacement of said stop by said counter-stop, and two slide-bars on said bar,

one of said slide-bars being effective to move the displacement-preventing means out ofthe path of said stop on the stop bar, the other slide-bar being effective to restore the stop to its ineffective' position,l one of said slilde-bars being arranged to operate the ot er.

20. In a typewriting machine, the combi-4 of said stop before it is' bar, lof a stop'on said sto -bar, means for moving said stop'to anfe ective position, a 4

counter-stop, meansfor preventing an acci- ,first slide-bar'being -provided with a slot comprisinga cam and a dwell, said `cam and dvvell engaging with the stud on the stopbar, and the cam being eective during the initial movement of said rst slide-bar to raise the slide-bar and move the displacement-preventing means out of the path ofsaidstop on the stop bar, said rst slide-bar being guided by the 'dwell during its continued movement and operative during said continued movement to operate the stop-restoring slide, the latter having a cam' by means of which 't is raised to restore the first-mentioned st p to an ineffective position.

21. In a'typewriti'ng machine, thecombination Witha carriage and a carriage stop shiftable thereon transversely of the direction of the carriage travel into and out of operative position, of a key-operated counter-stop projeotable into the path of the carriage stop, and a locking device for the carriage stop automatically brought into opthecarriage travel to prevent accidental counter-stop.

22. In a typewriting machine, the combination with a carriage, of. a carriage "stop thereon shiftable into and out of operative position, a series. of denominational stops on the machine `frame selectively movable into the path of the carriage stop, and a locking device automatically brought, during the travel of the carriage, into operative relation to the carriage stop and retained in such Y relation While the carriage stop is traveling past the denominational stops, to prevent accidental shifting of the carriage stop to inoperative position by the projection of a denominational stop While the latter is op- 'erative relation to the carriage stop during posite the carriage stop, the locking device position, a series of denominational stops on the machine frame selectively movable into the path of the carriage stop, and a locking device automatically brought, during the travel lof the carriage, into operative relation to the carriage sto and retained in such relation While the carriage stop is traveling past the denominational stops, to prevent accidental rshifting of the4 carriage stop to inoperative position by the rejection of a denominational stop While t e latter is oposite the carriage stop, .the locking devlce eing ineffective to control a carriage stop while the latter is beyond the zone of the denominational stops, said locking device comprising a locking bar on the machine frame in the path of shifting movement of the carriage stop to and from operative position.

24. In a typewriting machine, the comblnation With a carriage, of a stop rack thereon column stops mounted on said rack and shiftable thereon to and from operative osition, a key-operated counter-stop mova le into the path of the operative column stops, a locking device in position to prevent movement of the operative column stops from operative to ,inoperative position only While theyare passin the counter-stop, a stop-restoring device or movmg the column stops to inoperativepositions, and means operated by the said restorin device, during its initial movement, to wit draw said locking device to inoperativev position.

25. In a typewriting machine, the combination with a carriage and a series of stops thereon settable to operative position, of a key-operatedv counter-stop projectable into the path of the set carriage stops to arrest the carriage at positions corresponding Ato the positions of the set stops, a displacementpreventing device operative to prevent a carriage stop from being accidentally moved i from itsset position by the operation of the counter-stop only While opposite saidv carriage stop, a stop-setting device operative to l selectively set the carriage stops, and means operated by said stop-setting device to render the displacement-preventing device ineffective during a stop-setting operation. p 26. In a typewriting machlne, the combition with a carriage and a machine frame, of a stop on the carriage, a stop on the machine frame, a key to operate one of said stops, the other stop being shiftable into and out of operative position in which it may coperate with the key-operated stop to ar'- rest the carriage, and a locking device to lock the shiftable stop in its operative position While Within the range of movement of the key-operated stop, said locking device being effective onlyWhile the carriage is at or adjacent to the stop position determined by said stops.

27. In a typewriting machine, the combination With a carriage, of a stop and a counter-stop for positioning said carriage, means for preventing accidental movement of said stop by said counter-stop, means'to set said stop, and means for moving said preventing means to effective position brought into action under control of said stop-setting means after it has set any stop.

CORNELIUS B. CORCORAN.

Witnesses:

ARTHUR A. JOHNSON, EDITH B. LIBBEY. 

